# 1966 United States Senate election in Montana

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The 1966 United States Senate election in Montana took place on November 8, 1966. Incumbent United States Senator Lee Metcalf, who was first elected to the Senate in 1960, ran for re-election. He won the Democratic primary uncontested, and moved on to the general election, where he was opposed by Tim M. Babcock, the Republican nominee and the Governor of Montana. Though the race remained close, Metcalf was able to expand on his 1960 margin of victory, and defeated Babcock to win a second term.

## Democratic primary
### Candidates

* Lee Metcalf, incumbent United States Senator

### Results

Democratic Party primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lee Metcalf (incumbent) | 73,975 | 100.00% |
| Total votes | Total votes | Total votes | 73,975 | 100.00% |

## Republican primary
### Candidates

* Tim M. Babcock, Governor of Montana

### Results

Republican Primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Tim M. Babcock | 54,828 | 100.00% |
| Total votes | Total votes | Total votes | 54,828 | 100.00% |

## General election
### Results

United States Senate election in Montana, 1966 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Lee Metcalf (incumbent) | 138,166 | 53.17% | +2.44% |
| | Republican | Tim M. Babcock | 121,697 | 46.83% | −2.44% |
| Majority | Majority | Majority | 16,469 | 6.34% | +4.87% |
| Turnout | Turnout | Turnout | 259,863 | | |
| | Democratic hold | Democratic hold | Swing | | |